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Interactive
PBS

Pbs Learning Media: Classifying Polygons

For Students 3rd - 5th Standards
This interactive diagram focuses on sorting polygons by common properties and then you select the correct label for each section of the Venn Diagram.
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Handout
Quia

Ixl Learning: Rectangles

For Students 3rd - 5th Standards
Brush up on your math skills relating to rectangles then try some practice problems to test your understanding.
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Handout
Quia

Ixl Learning: Squares

For Students 3rd - 5th Standards
Brush up on your math skills relating to squares then try some practice problems to test your understanding.
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Professional Doc
Louisiana Department of Education

Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Angle Measure and Plane Figures

For Students 4th Standards
A guide to support parents as they work with their students in angle measure and plane figures.
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Interactive
K-5 Math Teaching Resources

K 5 Math Teaching Resources: Build a Hexagon [Pdf]

For Students 4th - 6th
Play a game to build a hexagon.
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Activity
University of Cambridge

University of Cambridge: Maths and Sports: Sports Equipment

For Students K - 1st Standards
Sports such as hockey, football, basketball and tennis use balls of different sizes. Can you arrange a selection of different balls in a line each touching the next to make the shortest line? This activity offers opportunities for...
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 9.5 Modeling in Three Dimensions

For Students 9th - 10th Standards
Explore connections between a 2-dimensional net and a 3-dimensional box. Later in this section, use equations with variables to solve real world problems that use 2 and 3-dimensional objects.
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Handout
The Math League

The Math League: Figures and Polygons

For Students 3rd - 8th Standards
This website has basic definitions for most polygons, regular and irregular.
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Activity
Science Museum of Minnesota

Science Museum of Minnesota: Tans

For Students 3rd - 5th
In this lesson make a tangram and experiment with it to make new designs and pictures.
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Article
Mocomi & Anibrain Digital Technologies

Mocomi: What Is a Polygon?

For Students 2nd - 8th
Defines polygons and explores characteristics, types of polygons, and how to calculate the area of a polygon.
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Website
Instituto Latinoamericano de la Comunicacion Educativa

Red Escolar: Recortando Geometria

For Students 6th - 8th Standards
In Spanish. In this site you will find different activities involving geometric plane figures.
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Activity
Instituto Latinoamericano de la Comunicacion Educativa

Red Escolar: Despega Sin Despegar

For Students 3rd - 8th Standards
In Spanish. In these activities you can develop the concept of trajectory. Try to trace the figures without lifting your pencil.
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PPT
Sophia Learning

Sophia: Two Lines Tangent to a Circle: Lesson 3

For Students 9th - 10th
This lesson will present how if two segments from the same point outside a circle are tangent to a circle, then they are congruent. It is 3 of 5 in the series titled "Two Lines Tangent to a Circle."
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PPT
Sophia Learning

Sophia: Using Triangles to Examine Quadrilaterals: Lesson 5

For Students 9th - 10th
This lesson demonstrates how to determine properties of quadrilaterals by using triangles. It is 5 of 5 in the series titled "Using Triangles to Examine Quadrilaterals."
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PPT
Sophia Learning

Sophia: Using Triangles to Find the Sum of Interior Angles: Lesson 1

For Students 9th - 10th
This lesson demonstrates how to use triangles to determine the sum of the interior angles of a polygon. It is 1 of 5 in the series titled "Using Triangles to Find the Sum of Interior Angles."
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Unknown Type
That Quiz

That Quiz: Figuras

For Students Pre-K - 1st Standards
This interactive activity is designed for the student to review different geometric planes figures.
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Article
Mocomi & Anibrain Digital Technologies

Mocomi: What Is Circle?

For Students 2nd - 8th
Discusses the radius, diameter, circumference, and area of a circle.
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Unknown Type
Khan Academy

Khan Academy: Cross Sections of 3 D Objects

For Students 9th - 10th Standards
Practice your knowledge of all possible cross-sections of common 3D objects. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unknown Type
That Quiz

That Quiz: Practice Test: Geometry

For Students 9th - 10th Standards
This resource allows users to test their geometry knowledge.
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Website
PBS

Pbs Learning Media: Patterns in Nature

For Students 3rd - 8th
In this video segment [3:25] from Cyberchase, a plant expert shows Bianca the patterns and symmetry found in nature.
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Unit Plan
Khan Academy

Khan Academy: Nets of Polyhedra

For Students 5th - 7th Standards
Practice matching 2D nets to the 3D shapes the fold up into. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gmd, G Mg Tennis Balls in a Can

For Teachers 9th - 10th Standards
In this task, students investigate the volume of tennis balls and their cylindrical container, the empty space around the balls, different ways of slicing them, and what their visualizations will look like. Aligns with G-GMD.B.4 and...
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 9.4 Connections Between Two and Three Dimensions

For Students 9th - 10th Standards
Cross-sections are one way that two-dimensional objects are connected to three-dimensional objects.
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Handout
Purple Math

Purplemath: Geometry Word Problems: Introduction

For Students 9th - 10th Standards
Introduces how to set up and solve simple geometric-figure word problems. Includes advice regarding formulas to memorize.

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